Hi Adrian, cheers for that plug info. 2047 was not bad, but at my level I don't think I would get any extra advantage out of it over the 086 and 053 Dynamite pipes I already have. I bought some GS "Team Kit" parts to strengthen the truggy up instead (I think it's going to get a hard life this year !!), plus Santa let me have a CL-1 Pro Buggy kit which I have just finished building. In the process of running in GO engine number two for the buggy at present. Now I just have to sell some of my old stuff to restore the bank balance